Shave 15 years off your mortgage

A LITTLE-KNOWN mortgage product offering interest rates as low as 2 per cent helped one investor knock at least 15 years off his home loan - but there's a catch.

Pivot loans, also called loan reducers, are only available to borrowers who have a home loan and an investment loan at the same. It shifts the interest from the home loan, which is not tax deductible, to the investment loan, turning it into a fully tax deductible loss.

"It enables me to pay my home loan off quicker, so every dollar I put in is going more towards reducing the debt, rather than paying interest on the home loan," Adrian Sheahan told 7 News.

Despite the official cash rate remaining on hold at its record low of 1.5 per cent, home loan rates have gradually crept up over the past 18 months - making the prospect of a 2 per cent interest rate particularly attractive.

The average interest rate on a variable owner-occupier home loan currently sits at around 4.17 per cent, while the average variable investment loan is sitting at 4.63 per cent, according to Canstar.

Canstar home loan expert Steve Mickenbecker said the pivot loan was a toned-down version of a "negative gearing on steroids" arrangement that was popular in the 1990s before the ATO cracked down.

"You would take out an investment loan and an owner-occupier loan, and what the lender would do back-office is they would put all or most of the interest through to the investment loan and all of the principal reduction through to the owner-occupier loan," he said.

"So effectively what you were doing was running down the owner-occupier loan faster, and getting an ever-increasing deduction on your investment loan. It was a very sweet deal, it was sort of like negative gearing on steroids.

"The ATO obviously said, 'Hold on, this is a heck of a rort', and clamped down on it. This is a lot more subtle. What they're doing here is saying, 'Look, you've got these two loans, if you meet certain loyalty provisions, we'll require a lesser interest rate and we'll apply the bulk of that discount to the owner-occupier portion of the loan.'"

Mr Mickenbecker said the pivot loan was a "niche product" and so "probably isn't too worrying" for the ATO. "But I can imagine if it became more than a niche product it might become more of an issue," he said. "These rulings can change."